BQ24751A

Host-controlled Multi-Chemistry Battery Charger, 300 kHz Frequency, High-Accuracy Voltage, QFN

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Price:: US $1.00~2.00 / piece [Get Latest Price]

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PartNumber:: BQ24751A

Brand:: Texas Instruments - TI | Pack: QFN | D/C: 10+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2011-10-07

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Part Number:BQ24751A
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Product Summary

The BQ24751A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications. The BQ24751A charges two, three, or four series Li+cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm thin QFN package. The applications of the BQ24751A are Notebook and Ultra-Mobile Computers, Portable Data Capture Terminals, Portable Printers, Medical Diagnostics Equipment, Battery Bay Chargers, Battery Back-up Systems.

Parametrics

BQ24751A absolute maximum ratings: (1)Voltage range:PVCC, ACP, ACN, SRP, SRN, BAT, BATDRV , ACDRV:-0.3V to 30V, PH:-1V to 30V, REGN, LODRV, VREF, VDAC, VADJ, ACSET, SRSET, ACDET, ACOP, CHGEN , CELLS, STAT, ACGOOD , LEARN, OVPSET:-0.3V to 7V, VREF, IADAPT:-0.3V to 3.6V, BTST, HIDRV with respect to AGND and PGND:-0.3V to 36V; (2)Maximum difference voltage:-0.5V to 0.5V; (3)Junction temperature range:-40℃ to 155℃; (4)Storage temperature range:-55℃ to 155℃.

Features

BQ24751A features: (1)NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency; (2)30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle; (3)High-Accuracy Voltage and Current Regulation; (4)Automatic System Power Selection From AC/DC Adapter or Battery; (5)Internal Loop Compensation; (6)Internal Soft Start; (7)Programmable Input Overvoltage Protection (OVP); (8)Dynamic Power Management (DPM) with Status Indicator; (9)Programmable Inrush Adapter Power(ACOP) and Overcurrent (ACOC) Limits; (10)Reverse-Conduction Protection Input FET; (11)Supports Two, Three, or Four Li+ Cells; (12)5 to 24 V AC/DC-Adapter Operating Range; (13)Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control; (14)Battery Learn Cycle Control; (15)Supports Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.; (16)Charge Enable.